The following standard reduction potentials are given at 298 K: A galvanic cell is…

CHEMISTRY · Subjective · A Level · Chemistry · Electrode potentials · Electrode potentials

Problem

The following standard reduction potentials are given at 298 K: Fe3++e−→Fe2+Fe^{3+} + e^- \rightarrow Fe^{2+} E∘=+0.77 VE^\circ = +0.77\,\text{V} Au3++3e−→AuAu^{3+} + 3e^- \rightarrow Au E∘=+1.50 VE^\circ = +1.50\,\text{V} A galvanic cell is assembled by combining these two half-reactions. Identify which half-reaction takes place at the cathode and state one sentence that justifies your choice using the tabulated potentials.

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